X7 NFC RFID Card Copier Reader Writer Duplicator for Mulit Frequency Read and Writer Smart Card Programming Card(5 pcs rewritable Cards 5 pcs UID keyfobs 5pcs T5577 keyfobs)

I recently tried out this handheld RFID writer, and overall, it does exactly what it promises with surprising simplicity. The compact design makes it easy to hold, and the labeled buttons (Read/Write) keep the operation straightforward. The LED indicators (Power, Pass, Busy) are helpful for knowing the device status at a glance.Functionally, it reads and writes RFID cards/fobs quickly, making it a handy tool for duplicating access cards when you have permission. It’s portable, lightweight, and requires no complicated setup — perfect for someone who just wants a basic RFID cloning device without needing advanced technical knowledge.On the downside, the plastic housing feels a bit cheap, and the build quality isn’t the most rugged. It seems more suited for occasional use rather than heavy-duty, professional applications. Additionally, it only supports certain frequency ranges (typically 125kHz for devices like this), so it won’t work for all RFID cards.Pros:• Easy to use, simple button layout• Clear LED indicators• Portable and lightweight• Affordable compared to larger RFID writersCons:• Build quality feels basic• Limited to certain RFID frequencies• Not designed for high-security or professional environmentsVerdict:If you’re looking for a budget-friendly, easy-to-use RFID writer for cloning low-frequency tags, this device is a good pick. It’s not the most durable or versatile option out there, but it gets the job done for simple tasks.

Terrible software, useless instructions and froze.They barely attempted to translate the manual from Chinese to English. It is very difficult to read and the user interface is non intuitive. After several attempts, I think I read my FOB, but then the device froze and I was unable to proceed. It cannot be reset, unplugging/plugging did nothing, etc. It will be returned.

Use the red "*" button at the bottom to cycle through options on the screen (it's not a touch screen). You don't really HAVE to do that---you can just use the read/write buttons for simple cloning.I didn't do that---just put a key fob badge under it and clicked the "Read" button. It failed a couple times, but I moved the fob around a little and then flipped it over and it read it.Then I did the same with "Write" button and one of the blank fobs they included. IT WORKED!!!!Then to clear the test fob I hit "Write", but didn't have the fob near it, then I typed "0000000" and then put the test fob up to it and hit "Write" again and it overwrote "00000" as the number. (We didn't want a second, usable fob floating around since this was just a test).The box and soft insert this came in was MUCH nicer than the one my Samsung phone came in, LOL!The pamphlet that comes with it mentions an "ODG" adapter---it's not, it's just a USB to USB C adapter, which is stuck on a regular USB to USB C cord. Nice of them, but all I could do was charge this device by plugging it into my phone--which is pretty cool if you don't use it often and don't want to find a wall outlet to charge this thing up in a hurry from. Maybe there is ODG possible---I don't know (***it works, just plug into Windows computer).I have over half a dozen devices like this (including the Zero Flipper) and this is probably the 3rd nicest. The build quality: it feels and looks nice in the hand too. Ease of use was easy. Immense value for the money: so many features to play with, but you can just read/write button it for simplicity.There are a zillion different types of RFID protocols out there---so you WILL need multiple devices with different frequencies/protocols for playing around.TIP: screen cap and print out the specs listed for all your RFID devices and make a nice binder--it'll make it easier to flip through and choose a device which stands a better chance of working (if you happen to know what protocol/frequency the tags you're trying to read/write actually are).****UPDATE: you can plug this into a Windows computer (any usb cable works) and it will OTG--once you download the software. Go to the website on the pamphlet and go to X7 and there will be a LONG instruction PDF and a couple versions of the software. I downloaded the latest (2025) updated software and it worked. YOU MUST CHOOSE TO READ either the regular type of card--or on the upper right a HID card. If you get an error "reading failed" just click on the OTHER "read card" button.

Was surprised at how well this was packaged. Felt like I was unboxing an iPhone.No hassle and the device boots up to instructions each time on how to use it. Was very simple and quick to use.

I needed to copy a key fob and make a duplicate so I pick this thing up. I was a little bummed that it could not read an encrypted card and allow me to duplicate it, but I totally understand encryption is there for a reason. I don’t own a PC computer, but there was a suggestion to try connecting the reader to a computer to see if that would help. I’m only on a Mac so I have to figure out another solution. I’m still not hopeful that it can decrypt the protection. If you’re just using this device to copy non-encrypted cards then it seems like it does a great job. It also allows you to write numbers to blank cards. The instructions are pretty awful and it takes a while to try to figure things out. They tried to create a nice little QR code with a website with instructions, but the videos didn’t even match the device that I received. This one does automatically read the frequency of the cards and it allows you to use a variety of frequencies unlike some of the cheaper units that only use one frequency. In my opinion, this was a little more expensive than it should be for what it does.

Not the easiest thing to use, but it works. Highly recommend downloading the user manual. This kit is worth the extra money over some of the cheaper options because it includes several different types of fobs to get you started, plus it can handle much more complex operations that require a PC. The most basic read/write is easy enough, but any key fob worth copying is probably going to be encrypted. This is going to require a Windows PC to connect to the device. Following the instructions, it's pretty straightforward. Saved me hundreds of dollars in unnecessary fees.

Only shipped with fobs and no reader twice! Sent comically fewer fobs the second time with the “replacement” order. Don’t order this

Great